Underwater repair of fatigue cracks by gas tungsten arc welding process

ABSTRACT A fatigue crack repair method for offshore jacket tubular joints is presented. This method is applicable for fatigue cracks detected and sized by regular inspection techniques such as magnetic particle inspection up to a crack depth in the range of 5 mm. The main advantage of the method rel...

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Bibliographic Details
Published in:Fatigue & fracture of engineering materials & structures Vol. 37; no. 6; pp. 637 - 644
Main Authors: Rodriguez-Sanchez, J. E., Perez-Guerrero, F., Liu, S., Rodriguez-Castellanos, A., Albiter-Hernandez, A.
Format: Journal Article
Language:English
Published: Oxford Blackwell Publishing Ltd 01.06.2014
Blackwell
Wiley Subscription Services, Inc
Subjects:
Applied sciences
crack
Crack propagation
Cracks
Exact sciences and technology
Fatigue
Fatigue failure
Flaw detection
Fracture mechanics
Gas tungsten arc welding
Inspection
Joining, thermal cutting: metallurgical aspects
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metal fatigue
Metals. Metallurgy
non-destructive
offshore
Repair
tubular joints
Welding
welding
non-destructive
Mechanical properties
Fatigue
Arc welding
tubular joints
Fatigue crack
offshore
crack
Offshore structure
Repair
GTA welding
Application
ISSN:8756-758X, 1460-2695
Online Access:Get full text
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Summary:ABSTRACT A fatigue crack repair method for offshore jacket tubular joints is presented. This method is applicable for fatigue cracks detected and sized by regular inspection techniques such as magnetic particle inspection up to a crack depth in the range of 5 mm. The main advantage of the method relies on its easy implementation allowing to be applied immediately after the crack is detected because equipment required is easy to transport and operate; so, it can be on board of a regular inspection campaign ship. A welding procedure specification has to be prepared and qualified prior to implementation of the repair method, considering particular parameters of the jacket fleet and selecting the welding equipment to be used. The proposed method could reinstall the original fatigue life in early stages of growth avoiding the need of more expensive procedures of repair such as joint clamping.
Bibliography:ark:/67375/WNG-PSSX9RV5-4
istex:E0B38D66CABF3174B4E8563C1319775FBCEB28BD
ArticleID:FFE12146
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ObjectType-Feature-1
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ISSN:8756-758X
1460-2695
DOI:10.1111/ffe.12146